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TIL the fins on the Apollo rockets existed only to provide an additional moment of stable flight so a crew member could reach an abort handle. The fins did not provide stability during normal operational flight.

Read more apollo11space.com

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lWWr TIL that NASA wanted to send Caroll Spinney, the actor who plays Big Bird to space via the ill-fated Challenger Space Shuttle in 1986 to interest children in space. However, the Big Bird suit was too big for the shuttle, so he was replaced by teacher Christa McAuliffe.
gMejX TIL that the common practice of adding "All rights reserved" to copyright notices came from a treaty in 1910, but as of 2000 it has become obsolete and is no longer needed.
1p0d TIL Billy Mays was signed on to star in a chain of Taco Bell commercials before his death.
b75a TIL that part of the reason that the cereal Oreo O’s was discontinued was due to the fact that it was the leading cause of child obesity in Spain
OJB1 TIL that a 2013 study found that about 25% of all US senior citizens declare bankruptcy due to medical expenses, and 43% are forced to mortgage or sell their primary residence